Monolithic Power Systems MPQ2122

Description

The MPQ2122 is an internally-compensated, 1MHz fixed-frequency, dual PWM, synchronous, step-down regulator. The MPQ2122 operates from a 2.7V-to-6V input, generates an output voltage as low as 0.608V, and has a 45µA quiescent current that makes it ideal for powering portable equipment that runs on a single cell lithium-ion (Li+) battery. The MPQ2122 integrates dual 80mΩ high-side switches and 35mΩ synchronous rectifiers for high efficiency without an external Schottky diode. Peak-current mode control and internal compensation limits the minimum number of readily-available external components. Fault-condition protections include cycle-by-cycle current limiting and thermal shutdown. The MPQ2122 is available in an 8-pin TSOT23-8 package

Features

• Dual 2A-Output Current

• 93% Peak Efficiency

• 80% Light-Load Efficiency

• Wide 2.7V-to-6V Operating Input Range
• 80mΩ and 35mΩ Internal Power MOSFET
• 1MHz Fixed Switching Frequency
• Adjustable Output from 0.608V to VIN
• 180° Phase-Shifted Operation
• 100% Duty-Cycle Operation
• 45µA Quiescent Current
• Cycle-by-Cycle Over-Current Protection
• Short-Circuit Protection with Hiccup Mode
• Thermal Shutdown

Typical applications

• •Small/Handhold Devices
• •Battery-Powered Devices
• •Smartphones and Feature Phones
• •DVD Drivers
• •Portable Instruments

More information

• Datasheet
• IC product information